Yes, there are.
There are two main groups: Plant and animal cells.
These to cells differ mainly in their structure and organelles, for each organism functions differently.
There are other types of cells which are not considered a group by themselves because they are just a bit different, (you could call them variations, or disabled if you like) for the fact that they have abnormalities like cancerous cells for example.
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neurotransmitters is the answer
Answer:
The Thymus is a unique gland which protects the body against autoimmunity when the immune system act against itself.Hence the Thymus plays a significant role the dual systems i.e.,the lymphatic system (body’s defensive mechanism) and the endocrine system
Explanation:
The Thymus is special gland located anteriorly to the chest directly behind the sternum and in between the lungs. Active until puberty and gradually shrinks to become fat after puberty.
Function: Prior to birth and during childhood thymus engage in producing and maturation of T-lymphocytes or T-cells a particular type of white blood cells which defence the body against infectious disease germs.Though the organ does not function throughout the life span but it plays a significant role protecting the body against autoimmunity refers to an immune system works against itself .Therefore the thymus plays a key role in lymphatic system and an endocrine system.
Secretion:Thymus secretes Thymosin a hormone it instigates the development of T-Cells ( disease resisting cells) Thymosin stimulates the development of T-Cells until a human attains its puberty.
At the age of 75 thymus becomes a fatty tissue.
The statement which describes the interaction of forces that causes ocean tides is that tides are caused by gravitational interactions between the earth, sun, and moon.
Tides are the rise and drop of ocean levels caused by the combined impacts of the gravitational powers applied by the Moon (and to a much lesser degree, the Sun) and are moreover caused by the Soil and Moon circling one another.
Tides are commonly semi-diurnal (two tall glasses of water and two moo waters each day), or diurnal (one tidal cycle per day).
The two tall glasses of water on a given day are regularly not the same tallness (the day-by-day imbalance); these are the higher tall water and the lower tall water in tide tables.
Additionally, the two moo glasses of water each day are the higher moo water and the lower moo water. The day-by-day disparity isn't reliable and is for the most part little when the Moon is over the Equator.
Learn more about ocean tides at
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